diff --git a/requirements.txt b/requirements.txt
index ebe3758..ce3392b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ lru-dict==1.1.6
 multiaddr==0.0.8
 netaddr==0.7.19
 parsimonious==0.8.1
-protobuf==3.10.0
+protobuf==3.18.3
 pycryptodome==3.9.0
 pyrsistent==0.15.4
 python-dateutil==2.8.0
diff --git a/setup.py b/setup.py
index d765a14..9898652 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@
             "multiaddr==0.0.8",
             "netaddr==0.7.19",
             "parsimonious==0.8.1",
-            "protobuf==3.10.0",
+            "protobuf==3.18.3",
             "pycryptodome==3.9.0",
             "pyrsistent==0.15.4",
             "python-dateutil==2.8.0",